- Anisotropic expansion of an M2L4 coordination capsule: Host capability and frame rearrangement
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Anisotropic expansion of a spherical M2L4 coordination capsule through the elongation of the ligand led to a new M2L′4 capsule. The expanded capsule provides an elliptical cavity encircled by polyaromatic frameworks with large openings and thereby can encapsulate elliptical fullerene C70 and monofunctionalized fullerene C60 in high yields. In addition, selective formation of a new M2L2L′2 capsule occurs by mixing the original M2L4 and expanded M2L′4 capsules in a 1:1 ratio upon addition of C60 or monofunctionalized C60 as a template molecule.
- Yamashina, Masahiro,Yuki, Tsubasa,Sei, Yoshihisa,Akita, Munetaka,Yoshizawa, Michito
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Read Online
- PROTEIN TYROSINE PHOSPHATASE INHIBITORS AND METHODS OF USE THEREOF
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Provided herein are compounds, compositions, and methods useful for inhibiting protein tyrosine phosphatase, e.g, protein tyrosine phosphatase non-receptor type 2 (PTPN2) and/or protein tyrosine phosphatase non-receptor type 1 (PTPN1), and for treating related diseases, disorders and conditions favorably responsive to PTPN1 or PTPN2 inhibitor treatment, e.g, a cancer or a metabolic disease.
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(2021/06/26)
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- Diphosphahexaarenes as Highly Fluorescent and Stable Materials
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Oligoarenes are regarded as subunits of π-extended carbon nanoforms, such as graphene and nanotubes, with exceptional technological importance. Fused arenes can thus provide fundamental insight into the nature of the electronic properties of fused polyaro
- Hindenberg, Philip,Busch, Marvin,Paul, Alexander,Bernhardt, Moritz,Gemessy, Patrick,Rominger, Frank,Romero-Nieto, Carlos
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supporting information
p. 15157 - 15161
(2018/10/31)
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- A simple route to derivatives of benzo[j]fluoranthene
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3,6,8,11-Tetramethoxybenzo[j]fluoranthene can be made from 1,6-dimethoxynaphthalene in a one-pot ferric chloride oxidation/methanol reduction procedure. The reaction is tolerant of the presence of substituents in the 7-position of the naphthalene nucleus and provides a quick and easy route to these particular benzo[j]fluoranthenes. The reactions presumably proceed through initial formation of a bond between the 4-positions of two naphthalene molecules followed by closure of the five-membered ring. Indeed in one case some 4,4′-binaphthyl was isolated from the reaction mixture and it was generally found that better yields of the benzo[j]fluoranthrenes were obtained starting from the 4,4′-binaphthyl rather than by using the naphthalene as the starting material. In an analogous manner to the ring-closure of the 4,4′-binaphthyls, starting from a hexakisalkoxyphenylnaphthalene, a hexakisalkoxyfluoranthene could be obtained.
- Tate, Daniel J.,Abdelbasit, Mohamed,Kilner, Colin A.,Shepherd, Helena J.,Warriner, Stuart L.,Bushby, Richard J.
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- Synthesis of highly substituted hexahelicenes
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C2-Symmetric hexahelicenes 3a-3g, which bear four or six alkoxy chains, were prepared in eight-to-nine reaction steps in high overall yields. The final step consisted of a twofold oxidative photocyclization of the corresponding 2,7-bis(2-phenylethenyl)naphthalenes. Long (and branched) chains provide a good solubility and processability, which is a prerequisite for applications in organic synthesis and materials science.
- Schwertel, Manfred,Hillmann, Sabine,Meier, Herbert
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p. 2020 - 2032
(2013/12/04)
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- Isomeric carbazolocarbazoles: Synthesis, characterization and comparative study in Organic Field Effect Transistors
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We report here the synthesis and characterization of a new family of isomeric carbazolocarbazole derivatives, namely carbazolo[1,2-a]carbazole, carbazolo[3,2-b]carbazole and carbazolo[4,3-c]carbazole. Thermal, optical, electrochemical, morphological and semiconducting properties have been studied to understand the influence of geometrical isomerism on the optoelectronic properties of these compounds. Different packing patterns have been observed by single crystal X-ray diffraction (XRD) which then correlate with the different morphologies of the evaporated thin films studied by XRD and Atomic Force Microscopy (AFM). The effect of N-substituents has also been evaluated for one of the isomers revealing a noticeable influence on the performance as organic semiconductors in Organic Field Effect Transistors (OFETs). A good p-channel field effect has been determined for N,N′-dioctylcarbazolo[4,3-c]carbazole with a mobility of 0.02 cm2 V-1 s-1 and I on/Ioff ratio of 106 in air. These preliminary results demonstrate the promising properties of molecular carbazolocarbazole systems which should be further explored in the area of organic semiconducting materials.
- Mas-Montoya, Miriam,Ortiz, Rocio Ponce,Curiel, David,Espinosa, Arturo,Allain, Magali,Facchetti, Antonio,Marks, Tobin J.
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p. 1959 - 1969
(2013/05/21)
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- Novel Compound, Method of Producing the Compound, Organic Semiconductor Material and Organic Semiconductor Device
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There are provided a novel compound having a good field mobility, a method of producing of the compound, an organic semiconductor material containing the novel compound, and an organic semiconductor device. The novel compound which is represented by the following general formula (1), (2), (3) or (4) (where Z represents a sulfur atom or a selenium atom, and R represents a hydrogen atom, an alkyl group or a phenyl group in general formulae) has a structure having two benzene rings of naphthalene bonded with a thiophene ring and a selenophene ring, respectively. These compounds have a conjugate system in molecules due to an interaction between it orbitals, and show a strong molecular interaction through a sulfur atom or a selenium atom contained in a thiophene ring or a selenophene ring in each molecule, thereby having a good field mobility.
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(2011/10/04)
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- Linear- and angular-shaped naphthodithiophenes: Selective synthesis, properties, and application to organic field-effect transistors
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A straightforward synthetic approach that exploits linear- and angular-shaped naphthodithiophenes (NDTs) being potential as new core structures for organic semiconductors is described. The newly established synthetic procedure involves two important steps
- Shinamura, Shoji,Osaka, Itaru,Miyazaki, Eigo,Nakao, Akiko,Yamagishi, Masakazu,Takeya, Jun,Takimiya, Kazuo
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body text
p. 5024 - 5035
(2011/06/19)
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- Molecular recognition of polymethoxybenzenes by host molecule comprised of two pyromellitic diimides and two dialkoxynaphthalenes
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For the continuing study of the molecular recognition of the π-electron-poor host comprised of two pyromellitic diimides and two dialkoxynaphthalenes, its inclusion with π-electron-rich polymethoxybenzenes has been examined. The UV-vis titration studies indicated following order of the association constants (Ka's) as 1:1 complexes in CHCl3: 1,3,5-trimethoxybenzene (31.3 M-1)>1,3-dimethoxybenzene (9.2 M-1)>1,2-dimethoxybenzene (6.5 M-1)>1,4-dimethoxybenzenes (2.8 M-1). The X-ray structural analysis of the complexes between the host and dimethoxybenzenes proved the intracavity 1:1 complexes and provided useful information on the structures of the complexes. Not only charge transfer interactions but also other weak interactions such as electrostatic, van der Waals, and the unique hydrogen bonds between the α-hydrogen atoms of the naphthalene and the methoxy oxygen atoms were considered to be responsible for the magnitude of the Ka's. Thus molecular recognition of polymethoxybenzenes has been accomplished by the neutral host using multipoint weak interactions in an organic solvent.
- Nakagaki, Takeshi,Shin-ichiro, Kato,Harano, Aya,Shinmyozu, Teruo
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scheme or table
p. 976 - 985
(2010/03/25)
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- Synthesis and characterization of new carbazolocarbazoles: Toward π-extended N-fused heteroacenes
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(Figure Presented) A regiospecific route has been developed for the synthesis of carbazolo[1,2-a]carbazole. The synthetic strategy is based on the use of appropriately tetrasubstituted naphthalene. Optical and electrochemical characterization of the fused
- Curiel, David,Mas-Montoya, Miriam,Uruvakili, Anasuyama,Orenes, Raul A.,Pallamreddy, Haranath,Molina, Pedro
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supporting information; scheme or table
p. 3164 - 3167
(2010/09/16)
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- A new building block for anion supramolecular chemistry. Study of carbazolocarbazole as anion receptor
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A novel carbazolocarbazole system has been evaluated as an anion receptor in DMF solution. A good affinity has been detected for oxoanions. The anion binding studies have been contrasted by different experimental techniques.
- Curiel, David,Mas-Montoya, Miriam,Sanchez, Guzman,Orenes, Raul A.,Molina, Pedro,Tarraga, Alberto
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scheme or table
p. 4811 - 4814
(2010/12/19)
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